What engine is this? http://tinypic.com/4duhu8nd It is in a boat that I may consider buying, but the horse power rateing seems high. Other Hemi powered boats I have looked at from this area are rated less hp per ci. The 1968 426ci marine hemi is rated at 325 horse. This engine acorrding to the seller is a 1957 354ci with 330hp. Is that right?

Thanks
Cody